cheap

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Search Results for "cheap"

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Antennas
  • H Doublebay Antennas - Cheap and EZ to build Bi-Directional VHF & HF antennas with gain
    [ Hits: 1474 | Votes: 4 | Rating: 2.75 ]
Antennas : 2M
  • A cheap dual band ground plane antenna - This little antenna is cheap and easy to build, lightweight, and very functional on 2 meters and 70 centimeters by NA4IT
    [ Hits: 2388 | Votes: 2 | Rating: 6.00 ]
Antennas : 4M
  • 4m Slim Jim Antenna - This 4m Slim Jim Antenna is cheap and easy to build yet it greatly out performs the more usual dipole due to its low angle of radiation. An SWR of 1:1 is obtainable across the 4m ham radio FM band with a simple adjustment.
    [ Hits: 1135 | Votes: 1 | Rating: 10.00 ]
Antennas : Portable
  • Squid poles as portable multiband antennas - Fancy a cheap, collapsible self-contained portable antenna for 80, 40, 30, 20 and 15m that works really well and can be erected in minutes, by VK7JJ
    [ Hits: 1082 | Votes: 1 | Rating: 7.00 ]
Antennas : Quad
  • Dual Quad Antenna - Cheap but effective multiband quad antenna covering the entire horizon on 10-12-15-17-20m bands.
    [ Hits: 283 | Votes: 2 | Rating: 2.50 ]
Antennas : VHF UHF
  • Rabbit-Ears Dipole Antenna - This handy and cheap portable dipole can be folded and backpacked, carried in use, and adjusted to a very wide range of frequencies.
    [ Hits: 443 | Votes: 0 | Rating: 0.00 ]
Antennas : WiFi
  • Cookie Cantenna Wi-Fi - Make a cheap, portable, high performance (15-18 db) directional antenna out of commonly available parts that can be purchased in most grocery and hardware stores.
    [ Hits: 5563 | Votes: 1 | Rating: 10.00 ]
Ham Radio : Blogs : Special Interest
  • rtl-sdr.com A blog about RTL-SDR - RTL-SDR is a very cheap software defined radio that uses a DVB-T TV tuner dongle based on the RTL2832U chipset. This is a blog about rtl-sdr, software defined radio and their developments and applications.
    [ Hits: 988 | Votes: 3 | Rating: 3.00 ]
Radio Equipment : HF Transceivers : Elecraft K2
  • Elecraft K2 Improving CW Filter - Here is a cheap and simple way to significantly improve the K2 CW filter(s). With this mod, even strong signals will fade to black as they tune out of the filter pass band
    [ Hits: 272 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Amplifiers : HF Amplifiers
  • HF power amplifier using GI7B - Gi7b is tube designed for microwaves but working good as HF amplifier. Idea is to build cheap, reliable HF amplifier covering 160 meters band.
    [ Hits: 3292 | Votes: 9 | Rating: 4.33 ]
Technical Reference : Amplifiers : RF Amplifiers Theory
  • Using cheap tetrodes in amplifiers - This article is written to dispel some of the misconceptions and misunderstandings about some of the tetrode based linear amplifiers, which are currently available on the amateur market.
    [ Hits: 197 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Amplifiers : UHF Amplifiers
  • A 100 Watt UHF Power Amplifier - Build a 100 Watt power amplifier using cheap, readily available junk radios
    [ Hits: 376 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Attenuators Technical Reference : Beacon keyers
  • The Milli Beacon - This page describes an cheap RF signal source, a portable micro beacon, using a low cost temperature controlled crystal oscillator
    [ Hits: 778 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Coax Cables and Connectors
  • Connectors - There are scores of RF connector types, ranging from the \"cheap and cheerful\" to the extremely expensive types intended for use in professional and military applications.
    [ Hits: 270 | Votes: 0 | Rating: 0.00 ]
  • RF Coaxial Switch - An interesting rf coaxial switch project capable of handling 800-1500 W. This is a cheap home made RF coaxial switch in use by PA0FRI
    [ Hits: 184 | Votes: 1 | Rating: 5.00 ]
Technical Reference : Duplexers
  • A Two Meter Duplexer - How to get a cheap-squeaky clean signal, a 2 meter duplexer designed by Leonard WB3AYW
    [ Hits: 3194 | Votes: 8 | Rating: 5.12 ]
Technical Reference : Filters
  • Cheap Crystal Filter - An economical way of building an SSB filter. The circuit is for a filter with a 6 DB band width of roughly 2.2 KHz.
    [ Hits: 283 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Frequency Counter
  • Simple frequency counter - This is an incredibly simple and cheap frequency counter with binary readout, based on the ideas of Onno PA2OHH.
    [ Hits: 1151 | Votes: 1 | Rating: 2.00 ]
Technical Reference : Keyers
  • ZL2PD CMOS Keyer - Two cheap CMOS ICs and a few transistors was all that was required to rebuild an elderly TTL automatic morse keyer into a low current lightweight battery powered iambic morse keyer.
    [ Hits: 386 | Votes: 1 | Rating: 6.00 ]
Technical Reference : QRP Projects : QRP CW Transceiver
  • 40 CW QRP Transmitter - Here is a easy to build and cheap CW transmitter using 40 m cristals. Power output is approximately 6 Watts for a supply voltage of 13.8 VDC
    [ Hits: 656 | Votes: 2 | Rating: 6.50 ]
Technical Reference : Repeater
  • Sub-Tone Generator for repeater triggering - If you need a cheap and easy to construct Subtone Generator for EU-model VHF-UHF rig, here is a solution that works very well.
    [ Hits: 689 | Votes: 3 | Rating: 10.00 ]
Technical Reference : Software Defined Radio : RTLSDR
  • RTLSDR.com - This Blog covers some of the latest developments and projects involving RTLSDR Dongles a cheap software defined radio that uses a DVB-T TV tuner dongle based on the RTL2832U chipset.
    [ Hits: 221 | Votes: 1 | Rating: 10.00 ]
  • RTL-SDR Tutorial: Cheap AIS Ship Tracking - How to cheaply track ships using AIS and a cheap $20 software radio.
    [ Hits: 1156 | Votes: 2 | Rating: 3.00 ]
Technical Reference : Test Equipment : Multimeter
  • Build a Test Meter - This article include a circuit that allows a cheap 0-1mA meter to be used as a micro-ammeter or a milli-voltmeter
    [ Hits: 110 | Votes: 0 | Rating: 0.00 ]
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